CVE-2021-30231 Explained : Impact and Mitigation

China Mobile An Lianbao WF-1 router 1.0.1 is vulnerable to CVE-2021-30231, which allows remote attackers to execute arbitrary commands via specific parameters. Learn about the impact, technical details, and mitigation strategies below.

Understanding CVE-2021-30231

This section provides insight into the vulnerability found in the China Mobile An Lianbao WF-1 router 1.0.1.

What is CVE-2021-30231?

The api/zrDm/set_ZRElink interface in China Mobile An Lianbao WF-1 router 1.0.1 allows remote attackers to execute arbitrary commands via shell metacharacters in certain parameters.

The Impact of CVE-2021-30231

The vulnerability enables attackers to run unauthorized commands through the affected router, posing a severe security threat.

Technical Details of CVE-2021-30231

Explore the technical aspects of the CVE-2021-30231 vulnerability.

Vulnerability Description

The issue lies in the api/zrDm/set_ZRElink interface, allowing the execution of arbitrary commands through specific parameters.

Affected Systems and Versions

China Mobile An Lianbao WF-1 router version 1.0.1 is affected by this vulnerability.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by using shell metacharacters in the bssaddr, abiaddr, devtoken, devid, elinksync, or elink_proc_enable parameter.

Mitigation and Prevention

Discover the actions to mitigate the risk associated with CVE-2021-30231.

Immediate Steps to Take

It is recommended to restrict access to the vulnerable interface and apply a firewall to filter out malicious requests.

Long-Term Security Practices

Regularly update the router firmware, conduct security audits, and educate users about safe online practices.

Patching and Updates

Keep the router firmware up to date with the latest patches provided by China Mobile to address the vulnerability.